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Explain the encapsulated anonymous function syntax
...Listopt ) { FunctionBody }
As you can see the Identifier (Identifieropt) token in FunctionExpression is optional, therefore we can have a function expression without a name defined:
(function () {
alert(2 + 2);
}());
Or named function expression:
(function foo() {
alert(2 + 2);
}());
...
How to escape special characters in building a JSON string?
...your browser console, for example, and observe the SyntaxError: Unexpected token '. The JSON spec is really simple and clear about this. There is no escape sequence in JSON for single quotes, and a JSON string cannot be single-quoted.
– Mark Amery
Dec 17 '14 at...
View all TODO items in Visual Studio using GhostDoc
... well by going to Tools->Options->Task List and adding items to the "Token list:" there (along with priority).
– Noah Richards
Jan 29 '10 at 21:26
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When should I use the HashSet type?
... HashSet<string> of all the valid commands, so whenever I hit a @xxx token in the lexer, I use validCommands.Contains(tokenText) as my O(1) validity check. I really don't care about anything except existence of the command in the set of valid commands. Lets look at the alternatives I faced:
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Checking whether a variable is an integer or not [duplicate]
...type in the Python source, but I don't think that's visible outside of C.
Token SO reply: Are you sure you should be checking its type? Either don't pass a type you can't handle, or don't try to outsmart your potential code reusers, they may have a good reason not to pass an int to your function.
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Why use iterators instead of array indices?
... end+1(!). For streams the iterator model is just surreal -- an imaginary token that does not exist. Likewise for linked lists. The paradigm only makes sense for arrays, and then not much. Why do I need two iterator object, not just one...
– Tuntable
Jan 21...
What's a reliable way to make an iOS app crash?
... popular one - unrecognised selector crash:
NSObject *object = [[NSObject alloc] init];
[object performSelector:@selector(asfd)];
Make sure you don't have -asdf method implemented in that class haha
Or index beyond bound exception:
NSArray * array = [NSArray array];
[array objectAtIndex:5];
A...
Disable pasting text into HTML form
...u've already saved their other information, so the message just includes a token saying which account this is for.
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What's the _ underscore representative of in Swift References?
...
The underscore is a general token used to indicate a discarded value.
In this specific case, it means that the function will be invoked as runAction(argument) instead of runAction(action:argument)
In other contexts it has other similar meaning, e.g. i...
How do I use extern to share variables between source files?
...ler is informed that a
variable exists (and this is its type); it does not allocate the
storage for the variable at that point.
A variable is defined when the compiler allocates the storage for
the variable.
You may declare a variable multiple times (though once is sufficient);
you may only defin...